Burglar proof lock for sliding glass doors

ABSTRACT

APPARATUS IS PROVIDED FOR A SAFE, INEXPENSIVE, AND ALMOST EFFORTLESS MEANS OF LOCKING SLIDING GLASS DOORS IN THE CLOSED POSITION. APPARATUS IS SO CONSTRUCTED WHEREAS TO BE SHAKE AND PRY PROOF BY ANY OUTSIDE EFFORTS. APPARATUS IS PUT INTO OPERATION BY PLACING APPARATUS AT THE DESIRED HEIGHT BETWEEN THE BACK OF ONE GLASS DOOR FRAME, AND THE FRONT SIDE DOOR OF THE OTHER GLASS DOOR FRAME, AND EXTENDING APPARATUS BETWEEN THEM. APPARATUS IS SO DESIGNED AS TO AUTOMATICALLY LOCK ITSELF AT ANY LENGTH WITHIN ITS LIMITS APPARATUS IS CONSTRUCTED OF A PIECE OF TUBING OUT OF WHICH A SOLID ROD TELESCOPE IN OR OUT OF THE DESIRED LENGTH. BOTH ENDS OF APPARATUS ARE SO DESIGNED AS TO FIT ONTO, AND AGAINST SLIDING GLASS DOOR FRAME, AND ONCE PLACED IN THE DESIRED POSITION, WILL STAY THERE UNTIL UNLOCKED AND REMOVED. ONCE PLACE INTO PROPER POSITION, SLIDING GLASS DOORS CANNOT BE OPENED UNTIL APPARATUS IS REMOVED.

Oct. 2-6, 1911 A. J. HARRIS BURGULAR PROOF LOCK FOR SLIDING GLASS DOORS Fil ed Oct. 22, 1969 I NVENTOR.

Patented Oct. 26, 1971 US. Cl. 292288 Claims ABSTRACT OF THE DISCLOSURE Apparatus is provided for a safe, inexpensive, and almost effortless means of locking sliding glass doors in the closed position. Apparatus is so constructed whereas to be shake and pry proof by any outside efforts. Apparatus is put into operation by placing apparatus at the desired height between the back of one glass door frame, and the front side of the other glass door frame, and extending apparatus between them. Apparatus is so designed as to automatically lock itself at any length within its limits. Apparatus is constructed of a piece of tubing out of which a solid rod telescope in or out to the desired length. Both ends of apparatus are so designed as to fit onto, and against sliding glass door frame, and once placed in the desired position, will stay there until unlocked and removed. Once place into proper position, sliding glass doors cannot be opened until apparatus is removed.

This invention relates to an apparatus for the safe, inexpensive, and almost effortless locking of sliding glass doors that are found in most of the modern homes of today. More particularly, it relates to an apparatus that can be used to lock sliding glass doors without drilling any holes or making any other permanent alteration to the doors or door sill.

It is readily apparent that many peoples homes are broken into through sliding glass doors with inefficient looks, or no locks at all.

Accordingly, this invention seeks to provide a safe, inexpensive, and almost effortless means of locking sliding glass doors.

Whereas, I believe this invention to be a functional apparatus serving a useful purpose to mankind.

In accordance with the above and other objectives of this invention, one preferred embodiment of this invention is herein illustrated in the accompanying drawings which form a part of this specification and wherein:

FIG. 1 is a front view of apparatus constructed in accordance with one embodiment of this invention placed in the locked position on a set of sliding glass doors.

FIG. 2 is an end view of apparatus illustrated in FIG. 3.

FIG. 3 is a top view of apparatus illustrated in FIG. 1.

FIG. 4 is an end view of apparatus illustrated in FIG. 3.

FIG. 5 is an end view of a portion of apparatus illustrated in FIG. 6.

FIG. 6 is a front view of a portion of apparatus illustrated in FIG. 1.

FIG. 7 is an end view of a portion of apparatus illustrated in FIG. 6.

FIG. 8 is an end view of a portion of apparatus illustrated in FIG. 9.

FIG. 9 is a front view of a portion of apparatus illustrated in FIG. 1.

FIG. 10 is an end view of a portion of apparatus illustrated in FIG. 9.

Referring more particularly now to FIG. 1, there is illustrated a set of doors 1 such as sliding glass doors,

having thereon apparatus 2 in the locked position. Ap- I paratus 2 is placed on doors 1 with U-shaped bracket 5 positioned so as to saddle one sliding glass door 1 with one end of apparatus 2 while the other end 6 is placed to butt the other sliding glass door 1.

Apparatus 2 is constructed of a piece of tubular metal 3 with a U-shaped piece of metal 5 secured to its end. Inside of U-bracket 5 is a piece of soft rubber 11 which is secured inside of U-bracket 5.

The opposite end of tube 3 is bent to form the housing 14 for the locking mechanism 8. Lock housing 14 is comprised of the end of tube 3 bent to the proper size and shape as illustrated in FIGS. 1, 3, and 9 with a hole 13 drilled to the proper size through the lock housing 14 which forms rod guide 15. Hole 13 passes through rod guide 15 and into tube 3 to form opening 9 through which rod 4 telescopes in or out of tube 3 to the length desired.

Lock mechanism 8 which rests on the inside of lock housing 14 and is held in the proper position by rod 4, has a hole 16 through it which rod 4 passes through when locking mechanism 8 is held in the unlocked position of less than degrees in relation to rod 4. Locking mechanism 8 is retained in the locked position when apparatus 2 is in use, by a spring 10 which rod 4 passes through. Spring 10 is held in position by rod 4 and is nested in lock housing 14 between rod guide 15 and locking mechanism 8.

The expansion of spring 10 against rod guide 15 and locking mechanism 8 causes locking mechanism 8 to bind against rod 4 causing apparatus 2 to lock at any length within its limits. To unlock apparatus 2 one needs only to contract spring 10 by applying pressure to the locking mechanism in the direction toward rod guide 15 causing locking mechanism 8 to achieve a 90 degree attitude in relation to rod 4, allowing rod 4 to be moved in either direction within its limits, therefore changing the size of apparatus 2 to the desired length for different sizes of sliding glass doors 1.

On the opposite end of rod 4 which telescopes in or out of tube 3, is a flush butt 6 attached perpendicular to rod 4 and provided for the attachment of apparatus to the other sliding glass door 1, therefore, achieving a status of an unmovable object between oppositing sliding glass doors 1 causing them to be locked in the closed position.

Flush butt 6 is so constructed as to fit against sliding glass door 1 as illustrated in FIG. 1. A depth stop 7 is provided on flush butt 6 to restrict flush butt 6 from striking the glass, on the sliding glass door 1, if installed properly. A piece of soft rubber 12 is also provided on the outside end of flush butt 6 nearest depth stop 7.

When apparatus 2 is in use, tension is sustained on apparatus 2 by soft rubbers 11 and 12 attached to both ends of apparatus 2 which prevents apparatus 2 from being shaken off sliding glass doors 1.

While the invention has been described in terms of one particularly useful embodiment, it will be evident to one skilled in the art that numerous changes may be made without departing from the scope of this invention, which is defined by the appended claims.

I claim:

1. For use in maintaining an inner and outer by-passing panel of the type conventionally installed in spanning relation of a building opening and adapted to be slidably opened by relative movement in parallel pass in a closely each of said by-passing panels including a frame with a first and a second member spaced from one another and each extending across the opening with said members of each panel being parallel to one another and disposed .generally in the respective planes of closure of their associated panels,

said second members of each frame being inboard with respect to its associated first member and with respect to the building opening, when the panels close the opening,

said bar means being adapted to be installed without the requirement of permanent attachment to the building or said panels and without the need of tools, said bar means comprising,

(A) an inner and an outer telescoping bar member,

(B) an abutment means on the opposite terminal ends of said bar means,

(C) said abutment means comprising,

(1) a first portion on one of said terminal ends having a surface arranged to abut the surface of the second member of the frame of the inner panel, whenthe bar means is arranged in the plane of closure of the inner panel and oriented in perpendicular relation to the first and second members, and

(2) a second portion of the outerterminal end having a surface to abut the first member of the frame of the outer panel,

(D) tension means on each of the surfaces of said abutment means adapted to be compressed when the bar means is telescopically extended in said orientation so that said first surface of the first portion abuts the second member of the inner panel and said surface of said second portion abuts the first member of the outer panel to block by-passing movement of, the panel frames,

(B) said tension means being yieldable in re sponse to shaking of the panels and small relative movement of the panels in the opening to correspondlingly adjust the length and adjustment of the bar means relative to said frames, to resist being dislodged by a burglar upon shaking of the panels,

(F) locking means to hold the bar means in an extended position when installed and against longitudinal compressive forces tending to collapse the bar means into shortened telescopic relation, and

2. The bar means as set forth in claim 1 wherein the tension means comprises a compressible pad of rubbery material on thesurfaces of said first and said second portion.

3. The device as set forth in claim 1 wherein said locking means comprises,

' (A) a housing on the inner end of the outer bar member of the bar means, and a lock mechanism,

(B) said housing comprising,

(1) a guide axially spaced from the opening of the inner end of the outer bar member and having a hole through which the inner bar member is slidable on telescoping movement of the bar member, and

(2) a lock mechanism seat between the inner end surface of the outer bar member and said guide,

(C) said lock mechanism comprising an element with a through hole and being circumposed about said inner bar member, said element being captivated in said housing and constrained by said housing to a limited degree of tilt movement from a first position oriented generally in a plane parallel to the cross sectional area of the bar means to a tilted attitude of the element in jamming relation between the inner rod and the housing to resist collapse of the bar means when forces of compression are applied to the abutment surfaces,

(D) said element being adapted to be unjammed by tilting the element into the first position by applying torque to the element in a direction parallel to said rod to tilt the element, and when installed, to com press said tension means slightly to release said lock mechanism and permit collapse of said bar means to remove it from the panels.

4. The device as set forth in claim 3 wherein said tension means comprises a compressible pad of rubbery material.

5. The device as set forth in claim 3 wherein the first portion of said abutment means comprises a U-shaped saddle to embrace the second member of the inner panel.

References Cited UNITED STATES PATENTS 598,405 2/1898 Williams 2 92-339 2,051,969 8/1936 Shastock 292306 2,724,609 11/1955 Donnelly 292266 2,973,217 2/1961 Gregoire 292339 X 3,328,920 7/1967 Cohen 49-449 3,420,001 1/1969 -Rayrnon 49-449 X 3,471,189 10/1969 Ness 292266 3,486,781 12/1969 Crum 292262 ROBERT L. WOLFE, Primary Examiner US. Cl. X.R. 

